Paper-tube-making machine.



H. N. GRISSINGER.

PAPER TUBE MAKING MACHINE.

APPLICATION FILED APR. 13, 1912.

Patented June 24, 1913.

6 EHEETS-SHEET 1.

WTNESSES HOMER N GR |g S W BY Lus ATTORNEY H. N. GRISSINGER.

PAPER TUBE MAKING MACHINE.

APPLICATION FILED APR. 13, 1912. 4 1,065,680. Patented June 24, 1913.

6 SHEETS-SHEET 2.

WITNESSES )NVENTOR nMM-av'w Zwwun- H MER N. GRISS\NGER 7e V 0 BY H\S ATTORNEY H. N. GRISSINGER.

PAPER TUBE MAKING MACHINE.

APPLIOATION FILED APR. 13, 1912.

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H. N. GRISSINGER. PAPER TUBE MAKING MACHINE.

APPLICATION FILED APR. 13, 1912.

1,065,680. Patented June 24, 1913.

INVENTO R HOMER N.

GRISSINCER BY HIS ATTORNEY WITNESSE 5 H. N. GRISSINGER.

PAPER TUBE MAKING MACHINE.

APPLIOATION FILED APR. 1a;, 1912.

1,065,680. Patented June 24, 1913.

6 SHEETS SHEBT 5.

I /'HOMER N. M 5. M GRISSINCER BY HIS ATTORNEY M-Lfbw A A H. N. GRISSINGER.

PAPER TUBE MAKING MACHINE.

APPLICATION FILED AP R. 13, 1912. 1,065,680.

INVENTOR /7 SHEETS-SHEET 6.

Patented June 24, 1913.

(Shim WFFNESS UNITED SA PA2ER-TUBE-MAKING MACHINE.

1,0 53%; Specification of Letters Patent. P t t d J n 24., 1on3,

' Application filed April 13,1912. Serial No. 690,644,

T 0 all whom it may concern:

-' Be it known that I, Home N. Gmssmemz, a citizen of the United States, residing in Philadelphia, Pennsylvania, have 1nvented certain Improvements in Paper- Tube-Making Machines, of which the following is a specification.

The object of my invention is to provide a machine for the rapid production of relatively short paper tubes such as those employed as cores for toilet paper rolls and the like. This object I attain by rolling .a strip of paper around a mandrel and securing the end of the outermost P y y means of a clenched staple,-or a plurality of such staples.

In the accompanying drawings Figure 1 is a side view of amachine constructed in accordance with my invention; Fig. 2 is-a plan view of the same-with the staple forming and driving mechanism removed therefrom; Fig. 3 is a transverse section on the line a-a, Fig. 2; Fig. 4 is a transverse sec-- tion, on an enlarged scale, on the line (3-6, F ig. 2; Fig. 5 is an end view of part of the machine looking in the direction of the arrow 0:, Fig. 2; Fig. 6 is a longitudinal section on the line cc, Fig.2, showing in elevation the winding mandrel elements of the paper feeding mechanism; Fig. 7 is a transverse section of part of the machine on the line" zZ-d, Fig. 2; Fig. 8 is a transverse section, on an enlarged scale, on the line ee, Fig. 5; Fig. 9 is a trans verse sect-ion on the line f]', Fig. 3; Figs. 10 to 13, inclusive, are views partly in transverse section and partly in elevation, of the staple forming and clenching devices, and Fig. 14 is as view partly in elevation and partly in longitudinal section on the line g-g, Fig. 13.

In the drawings, 1 represents the main table or bed of the machine mounted upon suitable legs 2, and 3 is anothertable supported above the table 1 upon suitable posts 4 and serving for the support and guidance of'the strips of paper from which the tubes are made, 5 representing the mandrel upon which the strips of paper are wound in order to produce the tubes.

I will first describe the means for supporting the strips of paper and feeding the same to the winding mandrel, reference being had particularly to Figs. 1, 2 and 4 of the drawings. The strips of paper are of such width as to produce a tube of the desired length and of such and certain in a stud 18 projecting length as to provide the desired number of plies in said tube, and a stack of these strips is deposited in an open cage sisting of vertical posts 6 and 7 the posts 6 being mounted upon the table 1, preferably by means of slotted feet 8 which permit of adjustment of the posts to accommodate variations in the width and length of the strips, one of the posts 7 being mounted on a bent arm 9 pro ecting fron'i a post 10 on the table 1 and the other of the said posts 7 being mounted upon a rod 11 which is mounted at each end upon suitable supports l1 projectin from the table 1, as shown in igs. 2 and 4, these latter posts being, by preference, mounted so as to be adjustable from and toward each other upon their respective supports, as for instance by means of sleeves 12 which can be adjustment by means of suitable set screws. The stack of paper strips is supported upon bars 13 and upon plates 14 and 15, the bars 13 being supported upon posts 13 and the plate 15 upon a post 15, which posts project upwardly from the table 1, as shown in Fig. 4. Each of the plates '14 has a pusher tongue 16 for engaging the lower strip of the stack and pushing it laterally onto the table 3, and each of these plates is mounted by means of a post 14 upon a bent rod 17 mounted so as to be ad ustable vertically from a sliding head 19 which is mounted so as to be movable laterally on transverse rods 20, each of these rods being carried, at each end, by a member of a forked bearing 21 on the table 1, said forked bearing also carrying plates 22 upwardly secured in position after disposed above the rods 20 and serving to protect the latter from dust or other foreign matters which might otherwise fall upon them from the stack of strips or from the mechanism above the rods, and which would interfere with the free sliding movement of the heads 19. Laterally reciprocating motion is imparted to the heads 19 and thence to the sliding plates 14 by means of a cam 23 on a shaft 24, this shaft being mounted in suitable bearings below the'table 1 and being driven from the main driving shaft 25 by means of a spur pinion 26 on the latter shaft meshing with a spur wheel 27 on the shaft 24, as shown in Fig. The cam 23 acts upon an anti-friction roller 28 carried by an arm 29 which is pivoted at one end to a fixed support at one end of the machine, and is connected at its other end by means of a twisted link 30 to one arm of a bell crank lever 31, the latter lever being also mounted upon a fixed support on the main frame and its other slotted at the upper end for engagement with a rod 32 which connects the sliding heads 19, as shown in Fig. 4. A. spring 31? tends to move the lever 31 in a direction opposed to that in which it is moved by the action of the cam 23. Mounted upon the rod 11, as by means of a clamp 33, is a head 34 in which is vertically guided a plate 35 which can be adjusted vertically by means of an adjusting screw 36 carried by the head 34 and bearing upon a collar 37 which engages a slot in the plate 35, as shown in Fig. 4, whereby the lower end of the plate 35 can be depressed so as to hear such relation to an inclined lug 38 at the inner end of the plate 15 as to accord with the thickness of a single strip of paper, thereby preventing the projection of more than one strip ata time from the pile or stack. The lowermost strip of the pile or stack is thus pushed laterally forward over the table 3 until its outer edge comes in cont-act with a stop bar 39 on said table, the strip in its forward passage passing between a pair of springs 40 and 41, the former being secured to the table 3 and the spring 41 being secured to the lower portion of the plate 35, as shown in Fig. 4. These springs thus exert such friction upon the selected strip as to prevent backward movement of the same with the sliding plates 14 and also to hold it in its proper longitudinal position. As the front edge of the strip approaches the stop bar 39 it is detlected by means of bent fingers 42 on said bar so as to be sure to contact therewith,

' the strip being thereby properly positioned upon. the table 3 for being subsequently fed forward in the direction of its length for engagement with the winding mandrel 5. As the strip is fed laterally over the table 3 its upper face is also acted upon by springs 43 carried by posts 44 which pass through openings in the rod 11 and are adjustable vertically therein so as to determine v the position of the springs 43 in respect to the strip, each post being secured in position after adjustment by a suitable set screw. As the strips may vary slightly in width the stop bar 39 is adjustable laterally on the table 3, said bar being carried by slotted feet 45 which can be secured to the table 3 by means of suitable clamp screws 46. The feeding of the successive strips forwardly, or in the direction of their length, to the mandrel 5, is effected by means shown in Figs. 1, 2, 5, 6, 8 and 9, said feeding device comprising a roller 47 carried by a shaft 48 mounted in suitable bearings below arm being oeaeeo or roughened surface so as to increase its hold upon the strip, which is pressed into" cont-act with said roller 47 'by means of a presser roll 49 bearing upon the to of the strip. As the strip is fed forwar by the rollers 47 and 49 it passes under a spring plate 50 above the table 3, and is thereby held down in contact with the table so that its forward edge will enter a slot 5 in the mandrel 5, as shown in Fig.- 6. During the winding of the paper strip around the mandrel said strip bears against a bar 51 which crosses the table 3 near the front end of the same and occupies a position slightly above the table, as shown in Fig. 6.. The

roller 47 is continuously rotated from the main shaft 25 as by meansof a belt 52 adapted to pulleys 5.3 and 54 -on the main shaft 25 and roller shaft 48 respectively, as

shown in Fig. 1, but during the time that y,

the paper strip is being fed transversely onto the table 3 and over the roller 47 the latter has no driving action uponthe strip, the roller being in driving relation with saidst-rip only when the latter is pressed down upon the surface of the roller by the presser roll 49, which is alternately raised and lowered so as to render the roller 47 operative for feeding purposes only after the paper strip has first been properly positioned upon the table 3 by means of the devices before described. In order to effect the desired raising and lowering of the presser roller 49 the same is mounted so as to be free to turn in the free end of an arm 55 which is mounted upon a fixed stud 56 carried by a bearing 57 upon the arm which carries the staple forming and driving de vices, as shown in Fig. 3. To the arm 55 is connected the upper end of a bar 58, which is forked at its lower end, as shown in Fig. 9, so as to embrace the shaft 24, the bar carrying an anti-friction roller 59 which is acted upon by a cam 60 on said shaft 24 so as to impart the desired rising and falling movements to the roller 49 at the proper time.

The mandrel 5 has intermittent movementsof rotation imparted to it bymeans of the mechanism shown more particularly in Figs. 5 and 8. Said mandrel has a shaft 61 free to turn in a bearing 62 on the table 1, and provided at its outer end with a spur pinion 63 which meshes with a spur wheel 64 whose hub is mounted so as to be free to rotate on a stud 65 carried by a post 66 on the table 1, as shown in Fig. 8. Mounted upon the face of the spur wheel 64 is a swinging pawl 67 acted upon by a spring 68 which tends to maintain the free end of the pawl constantly in contact with a notched disk 69 secured to the hub of the spur pinion 70, said pinion being mounted so asto be free to turn upon the hub of the spur 5 the table 3, the roller 47 having a knurled wheel 64, (see Fig. 8.) The pinion-70 is constantly in engagement with a toothed quadrant 71 which is mounted so as to be free to swing upon a stud 7 2 and has swinging movement imparted to it by a crank 7 3 on the shaft 24, the pin 74 of this crank being connected to the swinging quadrant 71 by means of a rod 75, preferably made in two parts with an intervening adjustable connection 76, so that the terminal oi-nts of the swing of the quadrant 71 can e adj-usted in order to insure the presentation of the slot 5 of the mandrel in proper relation to the forward edge of the advancing strip of paper as the latter is fed longitudinally over the table 3. To prevent displacement of this slot by momentum after the mandrel has completed its proper number of revolutions the shaft 61 has, outside of the spur wheel 63, a drum 160, upon whose periphery presses a friction pad 161 mounted upon the upper end of a spring 162, as shown in Fig. 5. Owing to the pawl and ratchet connection between the pinion and the spur wheel 64 the mandrel 5 has rotating movement only in the direction ofthe arrow shown in Fig. 6, the pawl passing freely over the notched disk 69 durin the reverse movement of the spur whee 64, consequently, after the forward edge of the paper strip has been caused to enter the slot 5 the rotating movement of the mandrel will wrap the strip around the same so as to produce a tube consisting of a number of plies, the number depending upon the length of the strip.-

In order to insure proper tension upon the paper during the winding operation and close contact of the successive lies of paper a finger 7 7 bears upon the strip during the winding operation, this finger being mounted in a suitable support upon the bearing 62 and projecting out over the mandrel, as shown in Figs. 2 and 3.

If, from any mischance, more than one strip of paper is fed onto the table 3 from the stack the forward feed of said plurality of strips to the winding mandrel will be prevented by means of a stop button 7 8 which is mounted so as to be vertically ad.

justable in an arm 79 projecting laterally from the stop bar 39, as shown in Figs. 2 and 7, this button serving to permit the passage of a single strip of paper but preventing the passage of either strip if there are more than one.

I have shown in the drawing the mecha-. nism for forcing and driving the staples whereby the end of the strip of paper is secured after the completion of the winding operation by the mandrel 5, but the mechanism for forming and driving the staples forms no part of my invention, the latter, as to this part of the machine, being limited to the means whereby the staple is clenched after being formed and driven through the staple-bending plates 84 and the sli various plies of paper of which thetube is composed. It will be sufiicient, for the proper understanding of my invention, therefore, to state that the stapling mecha nism comprises a head 80 mounted upon 70 an arm or standard 81 projecting upwardly from the table 1, this head serving for the guidance of a pair of slides 82and 83, as shownin Fig. 14, the'slide 82 carrying the e 83 15 carrying the driving plate 85, as shown in Figs. 1'0 to 13, inclusive. The stapling mechanism is also provided with means for feeding the end of a staple-forming wire 86 forwardly beneath the plates 84 and 85 and 0 over a staple-forming finger 87, which is loosely mounted on the head 80 and is normally pressed inward by means of a spring 88, as shown in Fig. 14, outward movement of the finger 87 being effected by contact 5 of acam formation 89 on the finger-carry ing arm 90 with the head of the screw 91 whereby the driving plate85 is secured to theslide 83, as shown in Fig. 14.

In the o eration of the machine the wire 99 86 is first ed forward, as shown in Fig. 10, over the staple formi'ng finger 87 while the slides '82 and 83 are in their elevated position, and the slide 82 is then depressed, a

knifeformation upon one of the plates 84 9'5 severing the projecting portion of the wire. 7 and said plates 84 then bending the wire down around the sides of the finger. -87 to form the staple, as shown in Fig. 11. The, slide 83 then descends, the first effect of this 100 operation being to cause thescre w head 91 to actupon the cam formation 89 of the arm 90 and withdraw the -finger 87 from the staple, the plate 85 then acting to drive the staple through the plies of paper constit-uting the tube, as shown in Fig. 12.

The staple clenching devices to which my invention is directed are carried by the mandrel 5 and are as follows: Set into the top of the mandrel is a block 92, which has therein a slot for the reception. of the projecting ends of the staple after the latter has been driven through the plies of paper by the action of the driving plate 85, the ends of bid slot being beveled, as at 93, (Figs. 10, 12 and 13) so as to deflect said ends inwardly. Formed in the mandrel is a transverse opening 94, reduced in diameter at its lower end, this opening receiving the clenching plunger, which has a contracted stem 95, playing in the contracted lower portion of the opening 94 in the mandrel, and an enlarged head 96 which is slotted for the reception of a clenching plate 97, the latter also playing in the slot formed in the block 92. At the bottom of the head 96 is a flange 98 upon which rests a coiled spring 99 interposed between said flange and the bottom of the block 92 and having a constant tendency to depress the clenching plunger and force the lower end of its stem 95 out into a recess 100 formed in the under side of the mandrel 5, as shown in Figs. 10, 11 and 12. In line vertically with the lower end of the stem 95, however, is another plunger 101, which is free to slide vertically in a suitable guide 102 on the bed 1, as shown in Fig. 1, this plunger being normally depressed by means of a spring 102*, as shown in Fig. 6. The lower end of the plunger 101 is acted upon by a set screw 103 carried by one arm of a bell crank lever 104 hung to a suitable fixed bearing below the table 1, the other arm of said bell crank lever being connected by a link 105 to an arm 106 which is hung to a fixed support beneath the table 1, and carries an anti-friction roller 107 which is acted upon by a cam 108 on the shaft 24, as shown in Fig. 1, so as to cause rising movements of the plunger 101 at the proper intervals. The driving of the staple and the bending inward of the free ends of the same, are effected while the clenching plate 97 occupies its retracted position as shown in Fig. 12, but as soon as the driving of the staple has been effected the clenching plate is projected so as to clench the staple,'as shown in Fig. 13, this operation being effected by the action of the external plunger 101 upon the stem 95 of the internal clenching plunger, the interposed plies of the tube being deflected into the recess 100 formed in the mandrel for this purpose. As soon as the clenching has been effected the external plunger 101 is retracted and the internal clenchin plunger is also retracted by the action 0 the spring 99 so as to permit the tube to resume its normal circula cross section in order that it may be driven from the mandrel.

The driving of the finished tube from the mandrel 5 is effected by devices shown more particularly in Figs. 1, 2, 3 and 5. Overlapping the inner end of the mandrel is a segmental pusher plate 110, which is carried by a head 111 free to slide laterally upon a transverse guide rod 112 above the table 1, said head 111 being provided with an anti-friction roller 113 which enters the slotted upper end of a lever 11 1 mounted upon a. bolt or stud 115 carried by a bracket 110 depending from the table 1, said lever being provided with an anti-friction roller 117, and being acted upon by a cam 118 on a disk 119 secured to the shaft 24, as shown in Fig. 3, this cam serving to operate the lever 114 so as to impart the ejecting movement to the pusher plate 110, the retraction of which is effected. by means of a coiled spring 120 interposed between projecting studs on the lever 11% and table 1, as shown in Fig. 3. The bracket 116 also carries the studs upon which are mounted the lever 104 and the arm 29.

Vertical movements are imparted to the oeaeeo slides 82 and 83 of the stapling device by means of'cam slots 121 and 122 in a swinging plate 123 pivotally mounted upon the head 80, these slots being intended to re ceive suitable projections on the slides and, swinging motion being imparted to tl'llS plate by the cam 108 through the medium of the lever 106 and connecting rod 124, a lever 125 and a connecting rod 126, a coiled spring 127 being connected to the lever 125 and serving to maintain the anti-friction.

roller 107 of the lever 106 constantly in contact with the acting face of the cam 108, as shown in Fig. 1.

I claim:

1. The combination, in a paper tube making machine, of means for feeding a paper strip, a rotating mandrel'upon which said strip is wound, and means for securing the end of the final ply by means of a staple driven through the plies of the tube and of paper to a rotating mandrel, and means i for securing the end of the final ply by means of a staple passed through the plies and clenched on the inside of the tube, said securing means comprising means for bending toward each other the ends of the staple which project into the tube, and a clenching plunger radially guided on the inside plate for acting upon said bent and projecting ends of the staple, whereby said bent ends will be pressed against the inner face of the tube.

3. The combination, in a paper tube making machine, of means for feeding a strip of paper to a rotating mandrel, and means for securing the end of the final ply by means of a staple passed through the plies and clenched on the inside of the tube, said clenching means comprising a clenching plunger laterally guided on the inside of the mandrel and having a clenching plate for acting upon the inner ends of the staple after the same has been driven through the plies of the tube, and a plate carried by the mandrel and serving to guide the said of the mandrel and having a clenching clenching plunger, said plate having beveled 1 portions whereby the preliminary inward and clenched on the inside of the tube, said securing means comprising clenchlng mechanism contained in the plunger and having a stem extending to the outslde of the plunger and an external presseroperating on said stem through the medium of the interposed plies of the tube.

5. The combination, in a paper tube forming machine, of means for feeding a strip of paper to a rotating mandrel, and means for securing the end of the final ply by means of a staple passed through the plies and clenched on the inside of the tube, said clenching mechanism comprising a mandrel c 4 having a recessed face, a clenching plunger transversely guided in said mandrel and having a stem projecting into said recess,

and an external plunger acting upon said stem through the medium of the interposed plies of the tube.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing Witnesses.

HOMER N. GRISSINGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

